| abstract |
A sintered MnZn ferrite body containing main components comprising 53.30-53.80% by mol of Fe calculated as Fe 2 O 3 , 6.90-9.50% by mol Zn calculated as ZnO, and the balance of Mn calculated as MnO, and sub-components comprising 0.003-0.020 parts by mass of Si calculated as SiO 2 , more than 0 parts and 0.35 parts or less by mass of Ca calculated as CaCO 3 , 0.30-0.50 parts by mass of Co calculated as Co 3 O 4 , 0.03-0.10 parts by mass of Zr calculated as ZrO 2 , and 0-0.05 parts by mass of Ta calculated as Ta 2 O 5 , pre 100 parts by mass in total of the main components (calculated as the oxides), and having an average crystal grain size of 3 μm or more and less than 8 μm and a density of 4.65 g/cm 3 or more. |